Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa2

• DOI: 10.48550/arxiv.2311.06988
• Publication Date: 2024-03-08
• Authors: P. Sherpa; I. Vinograd; Y. Shi; S. A. Sreedhar; C. Chaffey; T. Kissikov; M.-C. Jung; A. S. Botana; A. P. Dioguardi; R. Yamamoto; M. Hirata; G. Conti; S. Nemsak; J. R. Badger; P. Klavins; I. Vishik; V. Taufour; N. J. Curro
• Keywords: Physical sciences; Superconductivity (cond-mat.supr-con); Engineering; Chemical sciences; Condensed Matter - Superconductivity; Physical Sciences; 500; FOS: Physical sciences; Condensed Matter Physics; 530

9 pages, 7 figures<br/>We present nuclear magnetic (NMR) and qudrupole (NQR) resonance and magnetization data in the normal state of the topological crystalline superconductor LaNiGa$_2$. We find no evidence of magnetic fluctuations or enhanced paramagnetism. These results suggest that the time-reversal symmetry breaking previously reported in the superconducting state of this material is not driven by strong electron correlations.<br/>